StumbleUpon's video vertical, aptly named StumbleVideo, has just added six new content providers, including College Humor, Funny or Die, Vimeo, Dailymotion, Veoh and vbs.tv. Tack this onto existing content providers YouTube, MySpace and Metacafe, and it looks like the gang's pretty much all here.
If you've ever used StumbleVideo, you know the experience is almost like a game version of channel surfing. Get a random stumble video, search or pick a channel. Recommendations are provided according to user feedback (that's thumbs up or down), and you can feasibly waste hours of your day viewing clips on StumbleVideo's player. You can also see other users that like the same videos.
Will this help StumbleUpon, which still has a relatively early adopter audience, become more mainstream? Even though YouTube is the dominating video aggregator, a wider variety of online video content could be eBay's attempt to garner a larger audience base.